Improved composition of matter for the manufacture of emery-cloth



gut-12h rates atent @ffirr.

LEWIS FRANCIS, OF NEW YORK, N. Y., ASSIGN TO HIMSELF AND CYRUS H. LOUTREL, OF SAME PLACE.

Letters Patent 'No. 72,994, dated January 7, 1868.

IMPROVED COMPOSITION OF MATTER FOR THE MANUFACTURE OI EMERY-CLOTH, POLISHING- WHEELS, duo.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, LEWIS FRANCIS, of the city, county, andState of New York, have invented, made, and

applied to use a new and useful Composition of Matter for Various Purposes; and I do declare that the following is a full, clear, and correct description of the same. 7 v

My invention will be found to particularly constitute an improvement in the manufacture of emery-cloth, artificial bones, stereotype-plates, to be used by hand or by machinery, various forms of belts, wheels for polishing, and for various purposes-wherean elastic composition can be made available.

The nature of the present invention consists in combining glue and glycerine, with or without saccharine matter, with any of the metals or their insoluble compounds, finely divided, or with the solutions of their soluble salts. I

To enable those skilled in the arts to make and use my invention, I will proceed to describe the mode of making the same.

The formula for combining the various ingredients may be thus recited: Glue, ten (10) pounds; glycerine, five pounds; metal, about eight (8) pounds; saccharine matter, (if used,) five (5) pounds.

The glue is first soaked in water for about ten (10) minutes, and the water is then decanted and the glue is allowed to stand about two (2) hours. The glue is then placed in a glue or steam-kettle, and melted, and the glycerineis next added. When saccharine matter is employed by me, I add this next, and finally add the metals, or their insoluble compounds finely divided, or the solutions of their soluble salts. The whole is kept well stirred, at aheat of about 200 Fahrenheit, for about half or three-quarters of an hour. The composition is then ready for casting, or may be applied to the coating of fibrous or textile or other materials, as well as to sheets of rubber or to elastic cloth. When an exceedingly smooth surface is required, the fibrous, or textile, or other material coated with the composition, may be placed to cool upon plates of tin or glass, previously oiled.

When desirable, the glue and glycerinc, or glue, glycerine, and saccharine matter, may be combined and applied to the surface of the material first, and any of the metals or their insoluble compounds finely divided, or the solutions of their soluble salts be applied to the same while hot, in the same manner as is now employed in the manufacture of emery-paper or emery-cloth.

In the manufacture of emery-cloth, under my present process, the following formula may be recited: Glue, one (1) pound; glycerinc, four ounces; emery, a sufficient quantity to produce the result desired.

The various other modes of casting are too numerous to mention, they being the same as in general use, care being taken that the moulds be properly oiled before casting.

I do not wish to be understood as intending to confine myself to the formulae herein stated, as I am well aware that they maybe advantageously varied to suit the eharacterof the work required; as, for example, when stereotype-plates, made from the composition, are intended for use in the printing-press, they must be necessarily made harder than when required for hand-use. Again, when it is desired to print upon glass, or upon a. rough or uneven surface, a plate harder thamthat required for hand-work, but not so hard as for machine-work,

is required. When applied to the manufacture of emcry-cloth, the elasticity of the composition, increasing, as

it does, the durability of the article, renders it particularly desirable.

I do not wish to be understood as intending to confine myself to the use of glue, as other gelatin'es may be substituted for glue, and various gums, and resinous and bituminous substances, may be employed in part, and the composition be thereby improved for some purposes, care being taken that when any one of the gums, resinous or bituminous, is employed, the same is first dissolved by its proper solvent before being added in the manufacture of the composition.

Having thus described my present invention, what I claim as new, and desire to secure by Letters Patent, is

A composition of matter for various purposes, when the same shall be made substantially as herein described.

LEWIS FRANCIS.

. Witnesses:

A. SIDNEY Donna, Gnu WILLARD. 

